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Technical method and device for re-dewatering sludge from sewage treatment plant

A sewage treatment plant, sludge technology, applied in the direction of dehydration/drying/thickened sludge treatment, etc.

Inactive Publication Date: 2011-02-02
王应槐
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sludge is homogenized and refined

Method used

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Embodiment Construction

[0004] This technical invention is to manufacture the host unit equipment in the factory according to the inventor's design idea. At the same time, the auxiliary machine and supporting equipment are matched perfectly. Among them, auxiliary equipment and supporting equipment include sludge feeding and conveying device, kneading mechanism, solid-liquid separation equipment system, electrical equipment and automatic control system. According to the specific conditions of the sewage treatment plant, complete the supporting calculation work in advance. Build a workshop at the place where the sewage treatment plant discharges sludge. All the above-mentioned integrated complete equipment systems are installed in place according to the inventor's intention requirements. Then the sludge discharged from the sewage treatment plant is introduced into the equipment system for debugging. After the debugging is stable and can meet the requirements of the owner, it can work normally. Beca...

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Abstract

The invention relates to a technical method and a device for re-dewatering sludge from a sewage treatment plant, in which the sludge from the sewage treatment plant is rotated by a single screw rod or double screw rods driven by a power source, so that high pressure generated in a metal tubular cavity can enable the sludge materials in the cavity to move comprehensively under the action of a complicated stressed state. The screw of the screw rod can push the sludge to move axially as soon as the sludge moves into the tubular metal cavity. The mechanical friction between the screw and the sludge, between the sludge and the inner wall of the metal-cavity drum and inside the sludge enables the sludge to be fiercely extruded, stirred, shorn, twisted and rubbed, so that the sludge is homogenized and refined, and the temperature of the sludge is raised. Based on the principle of instant release and swell of the sludge materials which are extruded out of the high-pressure cavity into the atmosphere at a high speed, the sludge is denatured, and the denatured sludge is dewatered so as to achieve the purpose of further reducing the sludge moisture.

Description

[0001] Technical Field: Environmental Protection Background technique: [0002] The water content of sludge discharged from all urban sewage treatment plants in my country is about 76% to 85%. Due to the "heavy water and light mud" of the design institute and the sewage treatment plant, it has fallen into the quagmire and cannot extricate itself, and external rescue is required. In the process of sewage treatment, sewage treatment plants will finally produce sludge of 6 to 9 per ten thousand. These sludges are solid waste pollutants. These sludges contain a large amount of organic matter, cellulose, protein, germs and microbial corpses. The sludge just discharged from the sewage treatment plant looks solid, but it is actually semi-solid with a moisture content of about 76% to 85%. After stacking for more than 3 hours, it will become a pool of thin mud, the color will turn dark brown, and it will emit a foul smell. Serious re-pollution of the environment. At present, the u...

Claims

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Application Information

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IPC IPC(8): C02F11/12
Inventor 王应槐
Owner 王应槐
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